源代码为1.7（或7）的Java maven构建失败

Question

我正在将我的java 6代码升级到java 7。已将JAVA_HOME更新为OS X 10.9上的JDK 1.7。代码还没有使用任何Java7特性。

当我运行构建“mvn clean install”时，构建中断，没有任何有用的错误消息。

生成成功，源代码=1.6

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.1</version> <!-- tried with 2.3.2 and 3.0... no luck -->
        <configuration>
          <source>7</source>
          <target>7</target>
          <compilerArgument>-Werror </compilerArgument>
          <fork>true</fork>
        </configuration>

Error Message:
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 8.773 s
[INFO] Finished at: 2014-06-25T14:56:13-08:00
[INFO] Final Memory: 10M/245M
[INFO] ------------------------------------------------------------------------
[**ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:testCompile (default-testCompile) on project core: Compilation failure
[ERROR] Failure executing javac,  but could not parse the error:
[ERROR] 1 error
[ERROR] -> [Help 1]**
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

Answer 1

我猜用JDK1.7编译代码会产生警告，而用1.6编译代码则不会。因为当编译器遇到

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